All About Criminal Investigation (CI)
Criminal Investigation (CI) is The Law Enforcement Arm of the IRS. Start here to find out more how CI serves the American public by investigating potential criminal violations of the Internal Revenue Code and related financial crimes in a manner that fosters confidence in the tax system and compliance with the law.

Tax Fraud Alerts
Seek expert advice before you subscribe to any scheme that offers instant wealth or exemption from your obligation as a United States Citizen to pay taxes. Buying into a tax evasion scheme can be very costly.

How Do You Report Suspected Tax Fraud Activity?
If you have information about an individual or company you suspect is not complying with the tax law, report this activity.